OneDay Tests is a solid provider with their own UKAS-accredited laboratory. But if you want more biomarkers, deeper reporting, and nationwide phlebotomy, TrueVitals goes further. Here is how they compare.
| Feature | TrueVitals Ultimate | OneDay Tests Longevity |
|---|---|---|
| Biomarkers | 114 | ~71 |
| Price | £349 | ~£325 |
| Phlebotomy cost | £19 clinic / £39 at-home | ~£29 clinic (extra) |
| All-in price (with phlebotomy) | £368 clinic / £388 home | ~£354 clinic |
| Collection method | Venous (professional phlebotomy) | Venous (professional phlebotomy) or finger-prick |
| Clinic locations | 103+ nationwide | Own lab + partner locations |
| At-home phlebotomy | Yes (£39) | Not standard |
| ApoB | Yes (Advanced+) | Yes |
| Lp(a) | Yes (Ultimate) | Yes |
| Fasting insulin / HOMA-IR | Yes (Ultimate) | No |
| Full thyroid (FT3 + antibodies) | Yes (all panels) | Yes (FT3, FT4, TSH, TPO, TG) |
| Complete hormones (9 markers) | Yes (Ultimate) | Yes (12 including FAI and ratios) |
| Tumour markers | PSA/CA-125/CA 15-3 (Ultimate) | No |
| Report style | 30+ page AI-powered personalised report | Dashboard with results |
| Medical review | Yes, every report | Available |
| Lab accreditation | UKAS-accredited partner labs | Own UKAS-accredited lab |
| Turnaround | ~48 hours | Same day to next day |
OneDay Tests data is approximate and based on publicly available information as of 2026. Check their website for the most current pricing and panel composition.
Fair comparison means acknowledging strengths. OneDay Tests has genuine advantages worth recognising.
OneDay Tests operates their own laboratory, giving them direct control over quality and processing. This is a genuine differentiator over providers who outsource entirely. TrueVitals partners with UKAS-accredited laboratories including Randox Health for the Signature panel.
Same-day to next-day results is faster than most providers. If speed of results is your primary concern, OneDay Tests is strong here. TrueVitals delivers within approximately 48 hours, which includes the time for AI-powered analysis and medical review.
OneDay Tests offers finger-prick alongside venous collection. If you prefer not to have a venous blood draw, this flexibility is useful. TrueVitals uses venous collection only because it provides more blood volume for the larger panel and avoids haemolysis risk.
OneDay Tests markets their Longevity panel with a clear health-optimisation message. Their content and branding speak to the proactive health audience effectively. This is a well-targeted approach for their biomarker count.
OneDay Tests' Longevity panel includes 71 markers. TrueVitals Ultimate includes 114. OneDay has a strong hormone panel and includes Lp(a) and homocysteine, which is credit to them. The additional TrueVitals markers cover metabolic depth (fasting insulin, HOMA-IR, C-peptide), cardiac markers (CK-MB, myoglobin), immunoglobulins, tumour markers (PSA, CA-125, CA 15-3), cystatin C, and more comprehensive urinalysis. More data means more patterns identified and more actionable insight.
This is the biggest difference. OneDay Tests provides results in a dashboard. TrueVitals delivers a 30+ page AI-powered report that cross-references over 6,400 biomarker interactions, integrates your lifestyle quiz data (sleep, stress, exercise, diet, symptoms, goals), explains every result in plain English, identifies cross-system patterns, and provides specific personalised recommendations. The report is the product. See how our reports work.
TrueVitals has 103+ clinic locations across the UK via Nationwide Pathology, plus at-home phlebotomy for £39. OneDay Tests operates from their own lab with partner clinic locations. If you are outside their catchment area, access may be limited. TrueVitals' network means most people in the UK have a clinic within reasonable travel distance.
TrueVitals offers Advanced (74, £269), Ultimate (114, £349), and Signature (200+, £799 via Randox Health). OneDay Tests' primary offering is the Longevity panel at approximately 71 markers. If you want the deepest possible assessment, TrueVitals scales to 200+ biomarkers with the Signature panel. No other UK provider matches this depth. View Signature.
TrueVitals Advanced starts at £269 for 74 biomarkers including full thyroid with Free T3, ApoB, full iron studies, and comprehensive metabolic screening. That is more markers at a lower price than OneDay Tests' Longevity panel. For those who want depth without the full Ultimate, the Advanced panel is the best-value entry point in the UK market.
You prioritise same-day results over report depth. You prefer a provider with their own in-house lab. You want a finger-prick option alongside venous. You are located near one of their clinic locations. Approximately 71 markers covers your needs and you do not require full hormonal or metabolic depth.
You want more biomarkers (74 to 200+ vs ~71). You want AI-powered personalised reporting rather than a dashboard. You want the complete hormonal and metabolic picture including insulin and HOMA-IR. You need nationwide phlebotomy coverage. You want the option to scale to 200+ markers with the Signature panel. You value understanding over speed.
Yes. OneDay Tests is a credible provider with their own UKAS-accredited laboratory, venous blood collection, and fast turnaround. Their Longevity panel covers approximately 71 biomarkers across major health systems. The main limitations compared to TrueVitals are fewer biomarkers and basic reporting without AI-powered cross-system analysis.
The TrueVitals Advanced panel (74 markers, £269) is cheaper than OneDay Tests' Longevity panel (~71 markers, ~£325) with more biomarkers. The Ultimate panel (114 markers, £349) is approximately £24 more but includes 43 additional markers. On a cost-per-biomarker basis, TrueVitals offers better value at both tiers.
OneDay Tests does include ApoB in their Longevity panel, which is a significant strength. Both TrueVitals and OneDay Tests recognise ApoB as a critical cardiovascular marker. TrueVitals includes ApoB from the Advanced panel (£269). Advanced lipid guide.
TrueVitals delivers a 30+ page AI-powered personalised report that cross-references biomarker interactions with your lifestyle data, explains every result in plain English, identifies cross-system patterns, and provides specific recommendations. OneDay Tests provides a dashboard with results. If reporting depth matters to you, TrueVitals is significantly ahead. See our reports.
Yes. Many customers come to TrueVitals after testing with other providers because they want deeper analysis and more comprehensive reporting. Your previous results from any provider are useful baseline data. Mention them in your lifestyle quiz so your report can reference prior trends if relevant.
74 to 200+ biomarkers. AI-powered personalised reporting. 103+ clinic locations nationwide. From £269.
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